Question

what kind of feedback loop pushes a system to an extreme? melting ice caps is an example of this. positive negative

Explanation:

A positive feedback loop amplifies changes, pushing a system toward an extreme. In the melting ice caps example, as ice melts, less sunlight is reflected (albedo effect), leading to more heat absorption and further melting, which is a positive feedback mechanism. A negative feedback loop works to stabilize a system, so it's not the case here.

Answer:

A. positive